with claims for promoting "healthy" intestinal bacteria. Bacterial metabolism of soluble fiber also produces short-chain fatty acids like butyric acid, which may be absorbed into intestinal cells as a source of food energy. cellulose methyl cellulose hemicellulose lignans plant waxes resistant starches beta-glucans pectins natural gums inulin oligosaccharides See also Nutrient Essential nutrient List of micronutrients List of phytochemicals in food References Macronutrients